This system uses a computer controlled four-axis positioning table to “print” intricate bio-architectural constructions out of moss and seeds. Suspended in a clear gel growth medium, the moss continues to grow and the seeds sprout. The algorithmically-generated patterns drawn by the system are based on the Eden growth model and leverage mathematical representations of both urban growth and cellular growth, thereby connecting the concept of city with the concept of the organism. This project is working to make concrete the idea of dynamic and fluid computer space altering the expression and formation of a living and growing biological material, via its collaboration with an engineering mechanism.